Questions and Answers Archive
Physics questions and answers in March 2020
Michael pushes on the handle of a 12-kg lawn mower. The force of friction between the mower and the grass is 9 N. The handle makes a 35° angle with the horizontal. Michael wants to accelerate the mo...
A child pulls a 12.6 kg wagon across a level floor, causing it to accelerate at 7.5 m/s2. If the force of friction between the wheels and the wagon is 6.7 N, what is the force applied by the child? Re...
If a 5 N horizontal force is acting on a box and the box remains at rest, then the force of static friction must be ___________. Do not include the units in your answer or the computer will mark the ...
A cube of metal weighs 99.47 N and measures 0.19 m on each side. What is the density of the metal in kg/m3? Round your answer to the nearest whole number. Do not include the units in your answer or t...
A sphere of metal weighs 153.2 N in air. When placed in water, its weight is 59.2 N. What is the buoyant force? Using significant figures report your answer to 1 decimal place. Do not include the u...