During a football workout two linemen are pushing on the coach and the sled. The combined mass of the sled and the coach is 300 kg the coefficient of friction of between the sled and the grass is. 800. The sled accelerates at a rate of. 580 m/s/s. Determine the force applied to the sled by the lineman

Question

Avery Garrett

Physics

8 March, 01:39

During a football workout two linemen are pushing on the coach and the sled. The combined mass of the sled and the coach is 300 kg the coefficient of friction of between the sled and the grass is. 800. The sled accelerates at a rate of. 580 m/s/s. Determine the force applied to the sled by the lineman

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Yandel Reed · Answer 1

The force applied to the sled by the lineman makes the sled accelerate at a rate of. 580 m/s/s, after taking into account the frictional losses.

So, F = Fr + Fa

where Fa is the force resulting in an acceleration of. 580 m/s/s and Fr is the resistivive force.

Fr = uN where u is the coefficient of friction and N is the normal reaction force. So, Fr =.800 x (300kg) (9,81 m/s^) = 2354 N

Fa = ma = 300kg x. 580 m/s/s = 174 N

F = Fa + Fr = (174 + 2354) N = 2528 N