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Q. Maricruz slides a 68 kg crate, m, up an inclined ramp 2.0 m long and attached to a platform 1 m above floor level. A 415 N force, F, parallel to the ramp, is needed to slide the crate up the ramp at a constant speed. How much work does Maricruz do in sliding crate up the ramp?
Q. A uniform plank of length 5.8 m and weight 202 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the Illustrataing). To what distance x can a person who weighs 441 N walk on the overhanging part of the plank before it just begins to tip?
As part of a safety investigation, two 1800 cars travelling at 18 are crashed into different barriers. Find an average forces exerted on (a) car that hits a line of water barrels and takes 1.80 to stop, and (b) car that hits a concrete barrier and ta..
What is the maximum sideways angle. What is the train's acceleration after its wheel begins to stick.
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
A river flows due east at 1.43 m/s. A boat crosses the river from south shore to the north shore by maintaining a constant velocity of 10.5 m/s due north relative to the water.
A pipe open only at one end has a fundamental frequency of 282Hz. A second pipe, initially identical to first pipe, is shortened by cutting off a portion of the open end.
Determine the magnitude of the force experienced.
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
A non-uniform bar 5 meters has a center of gravity 1 meters from the heavy end. If it is placed on the edge of a block 1 meters from the light end and a weight of 1497N is placed at the light end of the bar, it will be balanced. What is the weight..
A motorist drives south at 22 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 30 m/s for 1.00 min. For this 6.40 min trip, find out the following values.
Jessica's weight is 540 newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 newtons that acts in the opposite direction.though , if Jessica stumbles while rol..
What is your displacement after running 2.8 {rm km} on Strawberry Fields, 1.4 {rm km} on Penny Lane, and 4.3 {rm km} on Abbey Road.
A man weighing 730 and a woman weighing 410 have the same momentum. What is the ratio of the man's kinetic energy to that of the woman.
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