Question

a sled weighing 60.0 n is pulled horizontally across snow so that the coefficient of kinetic friction between sled and snow is 0.100. a penguin weighing 70.0 n rides on the sled, as in figure p4.62. if the coefficient of static friction between penguin and sled is 0.700, find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off.

Answer 1

To find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off, we use the formula F_friction = coefficient of kinetic friction * normal force.

Step-by-step explanation:

To find the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off, we need to consider the forces acting on the sled.

The force of friction between the sled and the snow can be calculated using the formula F_friction = coefficient of kinetic friction × normal force.

The normal force is the weight of the sled plus the weight of the penguin, which can be calculated as normal force = weight of sled + weight of penguin = m_sled × g + m_penguin × g.

Substituting the given values, we have F_friction = 0.100 × (60.0 N + 70.0 N).

Therefore, the maximum horizontal force that can be exerted on the sled before the penguin begins to slide off is 13.0 N.