Pulled Apart
A sliding block experiences this force acting opposite its motion along a surface.
What is friction?
An object moving in a circle at constant speed still has this type of acceleration.
What is centripetal acceleration?
In ideal projectile motion, this component of velocity remains constant.
What is horizontal velocity?
Increasing friction while keeping all other forces the same causes this change in acceleration.
What is it decreases?
This force keeps an object moving in a circular path.
What is centripetal force?
This is the acceleration acting on a projectile in the vertical direction.
What is acceleration due to gravity?
For two blocks connected by a rope over a frictionless pulley, this determines the system’s acceleration.
What is the difference in the masses (and gravity)?
If an object’s speed doubles in circular motion, this happens to the centripetal force.
What is it quadruples?
At the highest point of its path, a projectile has this vertical velocity.
What is zero?
Making a surface rougher increases this force between two surfaces
What is friction?
At the top of a vertical loop, this is the minimum condition required to stay in circular motion
What is the centripetal force equals the weight (normal force = 0)?
Two projectiles are launched from the same height at the same time but with different horizontal speeds. This is which hits the ground first.
What is they hit at the same time?
In a pulley system with unequal masses, the rope tension is this compared to the heavier block’s weight.
What is less than the heavier block’s weight?
A car moving at constant speed around a curve experiences a net force pointing in this direction.
What is toward the center of the circle?
If the horizontal component of a projectile’s velocity is doubled while launch angle stays the same, this happens to its range.
What is it doubles?