A trolley with load on it is moving on a flat plane. The force felt by the trolley due to the load is $F$ . What is the work done by this force if the trolley moves a distance $d$ ?

F d

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- F d

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0

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F d / 2

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Solution

The correct option is C $0$
Work done is defined as the displacement times the applied force in the direction of displacement. Here, the load is applying a force in the downward direction but the trolley is moving on a flat plane. In other words, trolley has no motion in the direction of applied force because it is moving on a flat plane. Hence, no work is done by the load on the trolley.

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Question 23
A girl having mass of 35 kg sits on a trolley of mass 5 kg. The trolley is given an initial velocity of $4 m s^{- 1}$ by applying a force. The trolley comes to rest after traversing a distance of 16 m. (a) How much work is done on the trolley? (b) How much work is done by the girl?

Q. A girl having a mass of

35 k g

sits on a trolley of mass

5 k g

. The trolley is given an initial velocity of

4 m s^{- 1}

by applying a force. The trolley comes to rest after traversing a distance of

16 m

. How much work is done on the trolley?

A girl having mass of 35kg sits on a trolley of mass 5kg. The trolley is given an initial velocity of 4m/s by applying a force. The trolley comes to rest after travelling a distance of 16m.
(a) How much work is done on the trolley?
(b) How much work is done by the girl?

Q. Rohan is pulling a trolley with a force of

25 N

. The maximum friction that can be applied by the floor on the trolley is

60 N

. What should be the minimum force that Rahul should apply to move the trolley?

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A trolley with load on it is moving on a flat plane. The force felt by the trolley due to the load is F. What is the work done by this force if the trolley moves a distance d?

A trolley with load on it is moving on a flat plane. The force felt by the trolley due to the load is $F$ . What is the work done by this force if the trolley moves a distance $d$ ?