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:A truck starts from rest at the top of a slope which is 1m high and 49m long. Find its acceleration ans is 0.2 m/s2

:A truck starts from rest at the top of a slope which is 1m high and 49m long. Find its acceleration ans is 0.2 m/s2

Grade:12th pass

1 Answers

Arun
25763 Points
3 years ago
Need the force, Fds, pointed down the hill. That's a component of the weight. 
Fds = weight * sin(the angle between horizontal and slope) 
Weight is m*g. Sine is opposite/hypotenuse, so the above sine function is 1/49. Do the math to find Fds (you don't know the mass, so just leave it as m). So you will get something like 0.nnn*m as the expression for Fds. Then use Newton's 2nd (F = m*a).

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