Physics-
General
Easy
Question
Two blocks are arranged as shown in the figure. The relation between acceleration a1 and a2 is :
- a1 = a2
- a1 = 6a2
- a1 = 3a2
- a1 = 4a2
The correct answer is: a1 = 4a2
Related Questions to study
physics-
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with 
= 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
At a certain moment when the girl was accelerating, the earth frame acceleration of the trolley is found to be 1 m/s2 At this moment, the friction force between the girl’s shoes and the trolley’s surface is
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
At a certain moment when the girl was accelerating, the earth frame acceleration of the trolley is found to be 1 m/s2 At this moment, the friction force between the girl’s shoes and the trolley’s surface is
physics-General
physics-
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
The minimum time in which the girl can stop from 9 m/s relative speed, to zero relative speed, without causing her shoes to slip is
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
The minimum time in which the girl can stop from 9 m/s relative speed, to zero relative speed, without causing her shoes to slip is
physics-General
Physics-
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
The total kinetic energy of system (trolley + girl) at the instant the girl acquires her maximum relative speed with respect to trolley, is
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
The total kinetic energy of system (trolley + girl) at the instant the girl acquires her maximum relative speed with respect to trolley, is
Physics-General
physics-
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
The minimum time in which the girl can acquire her maximum speed, for no slipping, is
In figure shown on the right, the mass of the trolley is 100 kg, and it can move without friction on the horizontal floor. Its length is 12m. The mass of the girl is 50 kg. Friction exists between the shoes of the girl and the trolley’s upper surface, with = 1/3. The girl can run with a maximum speed = 9 m/s on the surface of the trolley, with respect to the surface. At t = 0 the girl starts running from rest to the right. The trolley was initially stationary.(g = 10 m/s2 )
The minimum time in which the girl can acquire her maximum speed, for no slipping, is
physics-General
physics-
A 1kg block is being pushed against a wall by a force F = 75 N as shown in the Figure. The coefficient of friction is 0.25. The magnitude of acceleration of the block is
A 1kg block is being pushed against a wall by a force F = 75 N as shown in the Figure. The coefficient of friction is 0.25. The magnitude of acceleration of the block is
physics-General
physics-
The velocity time graph of the fig. shows the motion of a wooden block of mass 1 kg which is given an initial push t = 0, along a horizontal table.
The velocity time graph of the fig. shows the motion of a wooden block of mass 1 kg which is given an initial push t = 0, along a horizontal table.
physics-General
physics-
With what minimum acceleration mass M must be moved on frictionless surface so that m remains stick to it as shown. The coefficient of friction between M & m is .
With what minimum acceleration mass M must be moved on frictionless surface so that m remains stick to it as shown. The coefficient of friction between M & m is .
physics-General
Physics-
I An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force 
The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : g = 10 m/s2
f initial velocity of the block is zero, its velocity at 4 seconds will be
I An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : g = 10 m/s2
f initial velocity of the block is zero, its velocity at 4 seconds will be
Physics-General
physics-
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : g = 10 m/s2
The graph of net force on the block with time will be
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : g = 10 m/s2
The graph of net force on the block with time will be
physics-General
physics-
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : g = 10 m/s2
The graph of friction force (f) with time will be
An initially stationary wooden block with a mass of 2 kg is pulled horizontally along a table with a time dependent force The coefficients of static and kinetic friction between the block and the table are 0.5 and 0.25 respectively. F(t) as a function of time is shown. Taking : g = 10 m/s2
The graph of friction force (f) with time will be
physics-General
physics-
The system shown is just on the verge of slipping . The co-efficient of static friction between the block and the table top is:
The system shown is just on the verge of slipping . The co-efficient of static friction between the block and the table top is:
physics-General
Physics-
Two trolley A and B are moving with accelerations a and 2a respectively in the same direction. To an observer in trolley A, the magnitude of pseudo force acting on a block of mass m on the trolley B is
Two trolley A and B are moving with accelerations a and 2a respectively in the same direction. To an observer in trolley A, the magnitude of pseudo force acting on a block of mass m on the trolley B is
Physics-General
physics-
Two long motor boats are moving in the same direction in still water, the boat A with speed of 10km/h and other with a speed of 20km/h. While they are passing each other coal is shoveled from the slower boat to the faster one at a rate 1000kg/min. Assume that the shoveling is always normal relative to the boat A and resistance offered by water is negligible. How much approximate additional force must be provided by driving engine of faster boat (B) if its velocity is to be maintained constant
Two long motor boats are moving in the same direction in still water, the boat A with speed of 10km/h and other with a speed of 20km/h. While they are passing each other coal is shoveled from the slower boat to the faster one at a rate 1000kg/min. Assume that the shoveling is always normal relative to the boat A and resistance offered by water is negligible. How much approximate additional force must be provided by driving engine of faster boat (B) if its velocity is to be maintained constant
physics-General
physics-
In the given figure F = 10 N, R = 1 m, mass of the body is 2 kg and moment of inertia of the body about an axis passing through O and perpendicular to plane of body 4kg-m2 O is the centre of mass of the body.
If ground is sufficiently rough to ensure rolling, what is kinetic energy of the body now in the given time interval
In the given figure F = 10 N, R = 1 m, mass of the body is 2 kg and moment of inertia of the body about an axis passing through O and perpendicular to plane of body 4kg-m2 O is the centre of mass of the body.
If ground is sufficiently rough to ensure rolling, what is kinetic energy of the body now in the given time interval
physics-General
physics-
In the given figure F = 10 N, R = 1 m, mass of the body is 2 kg and moment of inertia of the body about an axis passing through O and perpendicular to plane of body 4kg-m2 O is the centre of mass of the body.
If the ground is smooth what is total kinetic energy of the body after 2 seconds
In the given figure F = 10 N, R = 1 m, mass of the body is 2 kg and moment of inertia of the body about an axis passing through O and perpendicular to plane of body 4kg-m2 O is the centre of mass of the body.
If the ground is smooth what is total kinetic energy of the body after 2 seconds
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