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The wheels, axle, and handles of a wheelbarrow weigh W = 66 N. The load chamber and its contents weigh WL = 621 N. The drawing shows these two forces in two different wheelbarrow designs. To support the wheelbarrow in equilibrium, the man's hands apply a force to the handles that is directed vertically upward. Consider a rotational axis at the point where the tire contacts the ground, directed perpendicular to the plane of the paper. Find the magnitude of the man's force for both designs.
A projectile of mass 0.702 kg is shot straight up with an initial speed of 16.1 m/s. How high would it go if there were no air resistance
The hard disk in a laptop computer or some MP3 players contains one or more platters (spinning disks), What is the kinetic energy of one platter
A physics professor requires reading glasses with +1.6 D power toread a book held 39.1 cm away with a relaxed eye. Assume theglasses are 2.5 cm in front of his eyes. What is his uncorrected far point
A fisherman wants to know the mass of a trout he just caught but does not have scales. What is the mass of the fish
question1a 27 kg chair initially at rest on a horizontal floor requires a 377 n horizontal force to set it in motion.
A uniform magnetic field B is perpendicular to the plane of a circular loop of radius r. Find the emf in the loop as a function of time
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
A simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 N/m. while t = 3.00 s, position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
One of the limitations on the design of modern windmills for the generation of electricity is that the tip of the blades must not exceed the speed of sound in air, What is the acceleration of the blade tips
A ball is thrown into the air from ground level. After a time t = 1.0 s, the ball has traveled to a position x1 = 29.0 m to the right of and y1 = 9.0 m up from where it was thrown, What was the y component of the initial velocity of the ball
Low-frequency vertical oscillations are one possible cause of motion sickness, with 0.40 having the strongest effect. How much time elapses between two waves hitting the ship
On an air track, a 402.0g glider moving to the right at 2.25m/s collides elastically with a 498.0g glider moving in the opposite direction at 2.90m/s. Find the velocity of second glider after the collision
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