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  1. Problems
  2. /Mechanics
  3. /Friction

Friction

Physics
+ Upload a Problem
More in MechanicsUnits and MeasurementMotion in a Straight LineRelative MotionVectors and Motion in a PlaneNewton's Laws of MotionFrictionWork, Energy and PowerMomentum and CollisionsCircular MotionGravitationRotational MotionElasticity and Mechanical Properties of SolidsPressure and FluidsFluid Flow, Bernoulli's Principle and ViscositySurface Tension and Capillarity
13 problems
Type:
1.
A bucket of water, of mass 2.5 kg in all, is whirled on a rope in a vertical circle of radius 1.2 m.
High School (11–12) · Circular Motion, FrictionStemPy LabStemPy Lab
Hard
2.
A bend of radius 150 m is to be banked so that cars at 63 km/h need no friction at all.
High School (11–12) · Circular Motion, FrictionStemPy LabStemPy Lab
Medium
3.
A car takes a flat bend of radius 110 m.
High School (11–12) · Circular Motion, FrictionStemPy LabStemPy Lab
Medium
4.
A stone of mass 0.15 kg is whirled on a string of length 0.65 m in a horizontal circle, at 4.5 m/s.
High School (11–12) · Circular Motion, FrictionStemPy LabStemPy Lab
Medium
5.
A block is sent up a slope at 27° with a speed of 8.0 m/s.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Hard
6.
A block rests on a board. The coefficient of static friction between them is 0.55.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Medium
7.
A box slides from rest down a slope 5.5 m long, at 32° to the horizontal.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Medium
8.
A sledge starts from rest and slides 7.2 m down an icy slope at 22°.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Easy
9.
A box of mass 18 kg is pulled at a steady speed across a floor by a rope at 28° above the…
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Hard
10.
The graph shows the friction on a block against the push applied to it.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Medium
11.
A 7.5 kg block rests on a floor with µs = 0.55 and µk = 0.42.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Medium
12.
A 26 kg box rests on a level floor with µs = 0.48 and µk = 0.35.
High School (11–12) · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Easy
13.
Friction can hold a heavy crate with up to 240 N.
High School (9–10), General · Friction, Newton's Laws of MotionStemPy LabStemPy Lab
Medium