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A uniform beam of mass 10 kilogram is supported only at its ends. A workman stands on the beam, one quarter of the way from one end. Determine what force must support the end nearest the worker if he has a mass of 80 kilogram?
A pilot wishes to fly due east. If the planes maximum speed is 683 km/hr and there is a 21.4 km/hr wind from the north, what must the planes velocity be in order to fly due east
A 45 kg figure skater is spinning on the toes of her skates at 1.0 rev/s. Her arms are outstretched as far as they will go. In this orientation, the skater can be modelled as a cylindrical torso (40 kg, 20 cm average diameter, 160 cm tall) plus two r..
Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. What is the size of the image of the tree on your retina
A helicopter propeller blade starts from rest and experiences a constant angular acceleration of 10.5 rad/s2. Find the speed of a point on the blade 5.35 m from the axis of rotation
A circuit is pulled with a 16N force toward the right to maintain a constant speed v. What is the direction of the induced current
A 310 kg weather rocket is loaded with 100 kg of fuel and fired straight up. It accelerates upward at 28.0 m/s2 for 32.0 s, and then runs out of fuel. Overlook any air resistance effects.
A certain light-bulb has a tungsten filament. It has a power of 100 W when attached to 120 V potential difference. Calculate the resistance of the filament
What must be the mass m2 of the hanging block if it is to descend 11.0m in the first 3.00s after the system is released from rest
the speed of an object amp the direction in which it moves constitute a vector quantity known as the velocity. an
A playground merry-go-round (uniform disk with mass M=150kg and radius R=2m) rotates on a frictionless axle through its center. What is the kinetic energy of the child-merry-go-round-system
A parachutist whose total mass is 100kg is falling at 50 m/swhen her parachute opens. How many times her weight is this force
Body A of mass M has an original velocity of 6.0m/s in the +x dicrection toward a stationary body B of the same mass. What is magnitude of body B's velocity after collision
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