Question

A body of mass 2 kg is projected with a speed of 20 metre per second at an angle of 60 degree with the horizontal from the surface of the earth.Torque of its weight about the point of projection at t= 2 second

Answer 1

Torque = T = 692.7822 N

Explanation:

Mass = m = 2 kg

Weight = W = mg = (2)(9.81) = 19.62 N

Initial velocity = V = 20 m/s

Angle = θ = 60 degrees  

First we have to find the range of the projectile which is actually a moment arm. So,

Range of projectile = r = V^2 sin2θ/g = (20)^2 sin2(60)/9.81 = 35.31 m  

Torque = T = rF = (35.31)(19.62)

Torque = T = 692.7822 N

Answer 2

Answer:

,689.7822

Explanation:

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