Question

In a hydraulic jack, the radii of the small and big pistons are 1.0cm and 11.0cm. Neglecting friction, What downward push on the small piston of this jack can ideally lift a vehicle that weighs 48400N?

	300N
	100N
	400N

A submarine is at an average depth of 65m below ocean surface for which water mass density is 1020kg/m³. The total pressure, including the atmospheric pressure of 101,000 Pa is

	95,000Pa
	13,000Pa
	750,000Pa

Answer 1