d. It is not possible to tell from the given information b) During operation, th

Question

d. It is not possible to tell from the given information b) During operation, the jack hammer strikes the concrete surface with a force which is indicated in the graph. Determine the impulse caused by the jack hammer during each strike. FRN) o o.1 Use the diagram of the yo-yo being pulled to the right by the 200 N force for the three questions below. c) 1001nm 60m- i. True/False: The normal force does work on the yo-yo. ii. True /False: The weight W does work on the yo-yo. ii. True / False: If the disk rolls without slipping, the friction 200 N force does work on the yo-yo. Page 2 of S

Explanation / Answer

Impulse during each strike can be estimated from the given graph by calculating the area under the curve.

Impulse = F * d / 2 .....This is analogous to formula for a traingle 1/2 * base * height

Now , we need to consider maximum force and maximum distance.

Impusle = 1500*103*0.4*10-3. / 2

Impulse = 300 N.s

C). Work done is given by the product of force multiplied by distance. If yo yo is rolling without slipping, the distance moved is zero, therefore work is also zero. Same is with the case of normal force.

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