Calculate the weight of an object sitting on the Earth’s surface if the mass of the object is 50 kg? Assuming the force of gravity g = 9.81 m/s²).

In which of the following cases is work being done on an object? question 2 options: pushing against a locked door carrying a box down a corridor pulling a trailer up a hill suspending a heavy weight with a strong chain

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

What is the coefficient of kinetic friction μk between the block and the tabletop?