A 50.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300 and the coefficient of kinetic friction is 0.200. What is the friction force on the box if
(a) a horizontal 140-N push is applied to it?
(b) a horizontal 175-N push is applied to it?
What will be an ideal response?
Answer: (a) 140 N (b) 98.0 N
You might also like to view...
A water pump draws about 3.7 A when connected to 220 V. What is the cost (with electrical energy at 6.0 cents per kWh) of running the pump for 7.0 h?
a. 2.5 cents b. 9.0 cents c. 34 cents d. 68 cents e. 26 cents
A supertrain (rest-length = 100 m) travels at a speed of 0.950c as it passes through a tunnel (rest-length 50.0 m). As seen by a trackside observer, is the train ever completely within the tunnel? If so, by how much?
What will be an ideal response?
The alpha particle has twice the electric charge of the beta particle but deflects less than the beta in a magnetic field because it
A) moves much slower. B) moves much faster. C) has much more inertia. D) has much less inertia.
Deuterium was made only in primordial nucleosynthesis, since stars destroy it
Indicate whether the statement is true or false