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A karate expert breaks a pine board, 2.2 cm thick, with a hand chop. Strobe photography shows that the hand, whose mass may be taken as 540 g, strikes the top of the board with a speed of 9.5 m/s and comes to rest 2.8 cm below this level (a) What is the time duration of the chop (assuming a constant force)? (b) What average force is applied?

A karate expert breaks a pine board, 2.2 cm thick, with a hand chop. Strobe photography shows that the hand, whose mass may be taken as 540 g, strikes the top of the board with a speed of 9.5 m/s and comes to rest 2.8 cm below this level (a) What is the time duration of the chop (assuming a constant force)? (b) What average force is applied?
 

Grade:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
7 years ago
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