science
Grade-7
Easy
Question
An object is under the action of two forces that balance out each other. The forces are ____.
- Unequal and opposite in direction
- Equal and opposite in direction
- Equal and in the same direction
- Unequal and in the same direction
Hint:
Balanced forces are opposite in direction and equal in size.
The correct answer is: Equal and opposite in direction
- If two individual forces are of equal magnitude and opposite direction, then the forces are said to be balanced.
- Hence, the two forces that balance out each other equal and opposite.
- So, the correct option is b.
Related Questions to study
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Vimal had a remote-control toy car, which had separate buttons to control its velocity and direction of motion. He wanted it to be under balanced forces. How should he use the remote for that?
A) He should not start the car or use the remote.
B) He should start the car and then keep on increasing its velocity uniformly
C) He should start the car and make it move in a circular path
D) He should start the car and fix its velocity at a certain value and fix its direction of motion.
- Centripetal acceleration is needed for circular motion. Means there will be net centripetal force also.
- Velocity is increasing means there is acceleration. And hence, there is net force.
Vimal had a remote-control toy car, which had separate buttons to control its velocity and direction of motion. He wanted it to be under balanced forces. How should he use the remote for that?
A) He should not start the car or use the remote.
B) He should start the car and then keep on increasing its velocity uniformly
C) He should start the car and make it move in a circular path
D) He should start the car and fix its velocity at a certain value and fix its direction of motion.
scienceGrade-7
- Centripetal acceleration is needed for circular motion. Means there will be net centripetal force also.
- Velocity is increasing means there is acceleration. And hence, there is net force.
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A biker is moving on a circular track. What kind of forces are acting on him?
A biker is moving on a circular track. What kind of forces are acting on him?
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Pick the odd one out.
Pick the odd one out.
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Calculate the gravitational force acting on the ball in the figure below
Calculate the gravitational force acting on the ball in the figure below
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The greater the net force opposite to the direction of motion, the ___ the ____ in the direction of motion.
The greater the net force opposite to the direction of motion, the ___ the ____ in the direction of motion.
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Find the net force on the car. The various forces associated with the car are given below.
Find the net force on the car. The various forces associated with the car are given below.
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The acceleration of a moving body increases. What could be the reason behind it?
A) Increase in the unbalanced forces
B) Decrease in the unbalanced forces
C) Increase in the balanced forces
D) Increase in the net force
E) Decrease in the net force
The acceleration of a moving body increases. What could be the reason behind it?
A) Increase in the unbalanced forces
B) Decrease in the unbalanced forces
C) Increase in the balanced forces
D) Increase in the net force
E) Decrease in the net force
scienceGrade-7
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A car is moving on a road. What are the forces acting opposite to its direction of motion?
A) Frictional force
B) Force exerted by the engines
C) Air resistance
D) Force exerted by the brakes
A car is moving on a road. What are the forces acting opposite to its direction of motion?
A) Frictional force
B) Force exerted by the engines
C) Air resistance
D) Force exerted by the brakes
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A stone dropped from the top of a high-rise building is under the action of ____.
- Air resistance is a type of contact force.
- Gravitational force is a type of non-contact force.
A stone dropped from the top of a high-rise building is under the action of ____.
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- Air resistance is a type of contact force.
- Gravitational force is a type of non-contact force.
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A skydiver is under the action of unbalanced forces when he ____.
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A skydiver is under the action of unbalanced forces when he ____.
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689931 |
scienceGrade-7
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What is the downward force acting on a ball dropped from a height?
What is the downward force acting on a ball dropped from a height?
scienceGrade-7
science
A skydiver jumps from a helicopter. What are the forces acting on her?
- The net force and the acceleration on the falling skydiver is upward.
- An upward net force on a downward falling object would cause that object to slow down.
- The skydiver thus slows down.
- As the speed decreases, the amount of air resistance also decreases.
A skydiver jumps from a helicopter. What are the forces acting on her?
scienceGrade-7
- The net force and the acceleration on the falling skydiver is upward.
- An upward net force on a downward falling object would cause that object to slow down.
- The skydiver thus slows down.
- As the speed decreases, the amount of air resistance also decreases.
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A body moving in a straight line under the action of unbalanced forces moves ____.
A body moving in a straight line under the action of unbalanced forces moves ____.
scienceGrade-7
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A biker biking on a circular path is under the action of ___ forces.
- A centripetal force is a force which acts inwards to an object that moves in a circular path.
- This force is also dependent on the object's mass, speed of rotation of the object as well as the distance from the center.
- The unit of centripetal force is newton.
- The centripetal force is always directed perpendicular to the direction of the object's displacement.
A biker biking on a circular path is under the action of ___ forces.
scienceGrade-7
- A centripetal force is a force which acts inwards to an object that moves in a circular path.
- This force is also dependent on the object's mass, speed of rotation of the object as well as the distance from the center.
- The unit of centripetal force is newton.
- The centripetal force is always directed perpendicular to the direction of the object's displacement.
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A laptop lying on the table is under the action of ___.
A laptop lying on the table is under the action of ___.
scienceGrade-7