Magnitude of resultant forces

Mathematically and graphically determine the magnitude of the resultant forces acting on point (A) as shown in the figure below. Do not use mathematics in your graphical solutions.

Momentum and velocity

An object of mass 2 kg travelling in a straight line with a velocity of 20m/sec collides with, and strikes to, a stationary object of mass 3 kg. They both move off together in the same straight line with a velocity of v m/sec. If no external forces are acting calculate a. the total momentum just before the impact b. the tot ...continues

Work/kinetic friction on a system moving at constant speed.

"A 276 kg piano slides 4.02 m down a 30.2° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline, as seen in the figure (attached in a Word file). The effective coefficient of kinetic friction is 0.400. Calculate the work done by the man on the piano." See attached file for full prob ...continues

average force

"A 74.3 kg man steps out a window and falls (from rest) 1.01 m to a sidewalk. If the man falls with his knees and ankles locked, the only cushion for his fall is a 0.488 cm give in the pads of his feet. Calculate the average force exerted on him by the ground in this situation. This average force is sufficient to cause cartilage ...continues

Spring problem

A 2 kg block slides along a frictionless tabletop at 8.0 m/s toward a second block (at rest) of 5 kg. A spring which obeys Hooke's law with a spring constant k = 850 N/m, is attached to the second block. (a) What will be the maximum compression of the spring? (b) What will be the velocities of the two blocks when the spring i ...continues

M1 is let go on a frictioneess slope and hits M2. how high will M1 recoil after? Conservation of momentum and energy.

Problem: m1 starts from rest at height h. At the bottom of the frictionless slope stands mass m2. m1 is then let go, and collides with m2 an elastic collision. What will be the final height m1 will attain after recoiling from m2?

Two cars, moving at right angles, collide. Find x and y components of velocity after collision.

A Chevrolet whose weight Wc= 2700 lb is moving at Vc = 40 mi/hr at 0 degrees. A Bronco whose weight Wb= 3600 lb is moving at Vb = 60 mi/hr at 270 degrees. The vehicles crash and lock together then move as a unit. See ATTACHMENT #1 for a diagram. a. On the diagram, (not to scale) show all the given data. b. Showing units, fi ...continues

Linear momentum

"A 122 kg astronaut (including space suit) acquires a speed of 2.50 m/s by pushing off with his legs from a 1900 kg space capsule. What is the change in speed of the capsule?"

linear momentum

"High speed stroboscopic photographs show that the head of a 184 g golf club is traveling at 52.9 m/s just before it strikes a 45.1 g golf ball at rest on a tee. After the collision, the club head travels (in the same direction) at 42.2 m/s. Find the speed of the golf ball just after impact. Ignore the mass of the club handle."

Linear momentum

"A spring of negligible mass is compressed between two masses on a frictionless table with upward sloping ramps at each end. The masses are released simultaneously. The mass of M1 is less than the mass of M2. A) Is the force exerted by the spring on M1 greater than, equal to, or less than the force it exerts on M2? B) Is the ...continues