If the amount of force required to push a block of ice up an ice-covered driveway that is inclined at 25o is 100 pounds, then what is the weight of the block?
Presumably the applied force matches the component of gravitational force along the slope (the ice suggests zero friction).
100 = Mass*g*sin(25°) (g = 32.2 ft/sec/sec)
Rearrange to find the mass.
