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kap26 [50]
3 years ago
6

The 445-kg ram of a pile driver is designed to fall 2.21 m from rest and strike the top of a 261-kg pile partially embedded in t

he ground. The deeper the penetration, the greater is the tendency for the ram to rebound as a result of the impact. Calculate the velocity v of the pile immediately after impact for the following three conditions: (a) initial resistance to penetration is small at the outset, and the ram is observed to move with the pile immediately after impact; (b) resistance to penetration has increased, and the ram is seen to have zero velocity immediately after impact; (c) resistance to penetration is high, and the ram is seen to rebound to a height of 88 mm above the point of impact. Why is it permissible to neglect the impulse of the weight of the ram during impact

Social Studies
1 answer:
ArbitrLikvidat [17]3 years ago
7 0

Answer: a) 4.15m/s

b) 11.22m/s

c) 14.76m/s

Explanation: d).

Sometimes it is possible to neglect an external impulse if it is not in the direction of interest. 

Also, a small force acting over a long time can easily provide more impulse

Please find the attached files for the solution

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