WorksheetsAS 4 Force, Density, and Pressure
Total questions: 10
Worksheet time: 6mins
What's the magical formula for finding upthrust?
upthrust = weight of the fluid displaced by the object
upthrust force = density of the object
upthrust = mass of the object
upthrust = volume of the object
What happens to the pressure in a fluid as we go deeper and the fluid becomes denser?
The pressure remains the same regardless of the depth and density.
The pressure increases as we go deeper and the fluid becomes denser.
The pressure decreases as we go deeper and the fluid becomes denser.
What is the density of a substance if its mass is 500g and its volume is 250cm^3?
250 g/cm^3
2 g/cm^3
0.002 g/cm^3
1000 g/cm^3
Explain the concept of torque and how it is related to force and distance.
Torque is the measure of the force that can cause an object to move in a straight line
Torque is the measure of the force that can cause an object to rotate around an axis. It is related to force and distance through the equation Torque = Force x Distance.
Torque is only related to distance and not force
What role does friction play in the movement of an object on an inclined plane?
Friction slows down the object's movement
Friction causes the object to move in the opposite direction
Friction speeds up the object's movement
Friction has no effect on the object's movement
What is the reaction force on an object placed on a horizontal surface if the gravitational force acting on the object is 100N?
50N
200N
100N
0N
A cardboard with weight 0.15 N is held at point P.
How will the cardboard rotate?
Clockwise
Anticlockwise
No rotation, because it is in equilibrium.
What force of friction is needed to keep a 5kg block stationary on a 30-degree inclined plane?
3 N
25 N
43 N
49 N
A box slides down a rough plane.
Draw and label all forces on the box.
An airplane takes off at steady speed of 250 km/h at an angle of 10° and experiences the forces shown.
It is said to be in equilibrium.
True
False
