Physics-
General
Easy
Question
In figure, two blocks M and m are tied together with an inextensible and light string. The mass M is placed on a rough horizontal surface with coefficient of friction m and the mass m is hanging vertically against a smooth vertical wall. The pulley is frictionless.
Choose the correct statement(s)
- The system will accelerate for any value of m
- The system will accelerate only when m > M
- The system will accelerate only when m > mM
- Nothing can be said
The correct answer is: The system will accelerate only when m > mM
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The coefficient of friction between 4kg and 5 kg blocks is 0.2 and between 5kg block and ground is 0.1 respectively. Choose the correct statements
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Adjoining figure shows a force of 40 N acting at 30° to the horizontal on a body of mass 5 kg resting on a smooth horizontal surface. Assuming that the acceleration of free–fall is 10 ms–2, which of the following statements A, B, C, D, E is (are) correct?
1) The horizontal force acting on the body is 20 N
2) The weight of the 5 kg mass acts vertically downwards
3) The net vertical force acting on the body is 30 N
Adjoining figure shows a force of 40 N acting at 30° to the horizontal on a body of mass 5 kg resting on a smooth horizontal surface. Assuming that the acceleration of free–fall is 10 ms–2, which of the following statements A, B, C, D, E is (are) correct?
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Find the percentage difference between the geometrical and magnetic lengths?
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physics-General
