WorksheetsHomework 15-Buoyant force
Total questions: 10
Worksheet time: 5mins
If an object weighing 50.0 N displaces a volume of water with a weight of 10.0 N, what is the buoyant force on the object?
60.0 N
50.0 N
40.0 N
10.0 N
In which of the following situations will an object sink?
The mass density of the object is less than the mass density of the fluid.
The buoyant force on the object is equal to the weight of the object.
The mass density of the fluid is less than the mass density of the object.
The weight of the fluid displaced equals the weight of the object.
What is water displacement used to find?
volume
mass
density
An object should float in a liquid if...
Its denser than the liquid
It's the same density as the liquid
It's less dense than the liquid
What is buoyancy?
The ability of an object to float on the water
The ability of an object to sink on the water
A ship will sink as long as the buoyant force is
less than the ship’s weight
equal to the ship’s weight
greater than the ship’s speed
less than the ship’s speed
In a car lift, compressed air exerts a force, F1 on a small piston having a radius of 5.5 cm. This pressure is transmitted to a second piston of radius 20 cm as shown in figure above. The mass of the car is 1250 kg.
Calculate the pressure on the smaller piston F1.
6.25 kPa
61.31 kPa
97.57 kPa
306.56 kPa
In a hydraulic press, the ratio between the radius of the two pistons is 35 .What is the multiplying factor of the hydraulic press?
35
53
925
259
If air flow velocity increases, air pressure will also increase
True
False
Bernoulli's principle states that
pressure is transmitted equally in all directions in the fluid
buoyant force is equal to the weight of fluid displaced
when the velocity of a fluid increases, the pressure in the fluid decreases
