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A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 880 N on him. The mass of the losing player plus equipment is 86 kg, and he is accelerating at 2.6 m/s2 backward.f = 880 Nm1 = 86 kgm2 = 118 kga = 2.6 m/s2What is the magnitude of the force in friction, in newtons, between the losing players feet and the grass as he slides backwards?

Question

A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 880 N on him. The mass of the losing player plus equipment is 86 kg, and he is accelerating at 2.6 m/s2 backward.

f = 880 N
m1 = 86 kg
m2 = 118 kg
a = 2.6 m/s2

What is the magnitude of the force in friction, in newtons, between the losing players feet and the grass as he slides backwards?

 

check_circleAnswer
Step 1

The frictional force acts in a direction opposite to the motion of the losing person.

From Newton’s second law, the net force acting on the losing person results in his acceleration as,

F
net ma
F-f ma
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F net ma F-f ma

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Step 2

Here, f is the friction’s force between the losing person’s feet and grass, F is the force applied on the losing per...

f F-ma
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f F-ma

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Science

Physics

Friction

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