A constant force acts on a body of mass 120 gm initially at rest, for 3 seconds. The body then moves 108 cm in next 4 seconds. What was the force that acted on the body?
1)540 dyne
2)1080 dyne
3)2000dyne
4)2440 dyne
(Hint- 1 Newton= 100000 dyne)
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Answered by
2
Answer:
Explanation:
As for first 3 secs. The u =0
So the acceleration would be 0 and force acting would also be zero.
So time taken for the force acting would be 4 secs. Only and put it in the equation
S=ut+1/2×at^2
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Answered by
1
Answer:
Explanation:
To find the velocity for calculation of the force, simple formula of
velocity = distance/time
Can be used as acceleration is zero after 3 sec.
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