A161-kg block is pulled at a constant speed of 7.40 m/s across a horizontal floor by an applied force of 138 n directed 36° above the horizontal. what is the rate at which the force does work on the block?

510.6 W

Explanation:

The rate at which the force does work is called power therefore it is given by:

The instantaneous power applied on a rigid solid is given by the product of the constant force applied over the solid's velocity.

Here is the angle between the force and the velocity.

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pe = weightxheight = 2000x1000=2,000,000joules