A worker is pushing on a hot tub with a mass of 200 kg with a force of 400 N, but fails to move the hot tub. Which statement must be true?
A)

the normal force has increased

B)

the coefficient of static friction has decreased

C)

force of gravity on the shoe has increased

D)

the component of the normal force along the ramp has increased

E)

the component of gravity acting along the plane of the ramp has increased

Respuesta :

The component of the normal force along the ramp has increased.

Net force on the hot tub

The net force on the hot tub is determined by applying Newton's second law of motion as follows;

∑F = 0 (the net force is zero because the tub did not move)

F - μFₙ = 0

where;

  • F is the applied force
  • μFâ‚™ is the frictional force or component of the normal force along the ramp

Thus, we can conclude that, the component of the normal force along the ramp has increased.

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