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Mechanics
Page 3
Questions (40,033)
You are told 3 things...1. That there are two objects with equal masses. 2. Both objects are in motion. 3. One object has a
17 answers
asked by
Clueless
1,590 views
A box of mass m = 6kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One piece,
6 answers
asked by
Shahab Mirza
4,486 views
A steel wire 40 m long is suspended between two fixed points 20 m apart.
A force of 375 N pulls the wire down at a point 15 m
4 answers
asked by
Alex
2,598 views
A water-skier is being pulled by a tow rope attached to a boat. As the driver pushes the throttle forward, the skier
4 answers
asked by
Brookeneed
6,966 views
The velocity of a particle on the x-axis is given by the differential equation dx/
dt= t^2/ 2 and the particle is at x = 4 when t
6 answers
asked by
John
1,837 views
A load of 4N extends a spring by 10mm. What load would extend it by 15mm?
5 answers
asked by
Luyando
737 views
a 3200-lb elevator cab is supported by a cable in which the maximum safe tension is 4000 lb. (a)what is the greatest upward
4 answers
asked by
esther
1,928 views
The mass of the roller coaster below is 80 kg. It starts from rest at a height of 30 m and reaches a speed of 20 m/s at point B.
4 answers
asked by
Heylee Green
1,012 views
a man 80kg carries a load of bricks of mass 20kg up a vertical ladder of length 6m what work has he done
7 answers
asked by
ISAAC
4,235 views
1) When a pendulum 0.5m long swings back and forth, its angular displacement Ɵ from rest position, in radians is given by
5 answers
asked by
Hyde
3,806 views
A hydraulic plunger has a 12 cm diameter and a force of 350 kN acts on it. What is the pressure exerted on the plunger?
4 answers
asked by
jay
1,925 views
An airplane's velocity with respect to the air is 580 miles per hour, and it is heading N 60 degrees W. The wind, at the
6 answers
asked by
Hannah
6,410 views
A toy rocket has a mass 0f 350g at launch. The force it produces is 15N and it is fired at an angle of 65° to the horizontal.
10 answers
asked by
Joseph
5,809 views
A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered
7 answers
asked by
jack
7,690 views
when a 14.0 kg mass hangs from a spring that has a spring constant of 550nm the spring has a length of 82 cm. determine the
5 answers
asked by
FORM 3G
2,198 views
Wayne pulls a 305 N sled along a snowy path using a rope that makes a 45.0° angle with the ground. Wayne pulls with a force of
5 answers
asked by
Merlin
6,047 views
a roller whose diameter is 20 in weight 72 lbs. what horizontal force is necessary to pull the roller over a brick 2 in high
5 answers
asked by
peter
4,041 views
A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil
6 answers
asked by
Mishaka
5,179 views
A 1200 lb sleigh is pulled along a horizontal surface at uniform speed by means of a rope that makes an angle of 30 degrees
5 answers
asked by
Lian
3,933 views
A 0.20-kg mass is hung from a vertical spring of force constant 55 N/m. When the
spring is released from its unstretched
5 answers
asked by
Syed
4,435 views
A bowling ball rolls without slipping up a ramp that slopes upward at an angle (beta) to the horizontal. Treat the ball as a
4 answers
asked by
Joe
7,680 views
A block and tackle having a velocity ratio of 5 is used to raise a load of 400N through a distance of 10m. If the work done
6 answers
asked by
Michael Nyame
3,624 views
A non-rotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. Assuming
5 answers
asked by
Aja
4,559 views
A flywheel of moment of inertia 0.32 kgm^2 is rotated steadily at 120rad/s by a 50 W electric motor. (i)find the kinetic energy
4 answers
asked by
Edwin
4,692 views
The cannon on a pirate ships shoots cannon balls with a speed of 350 m/s (the muzzle velocity). The cannon can be adjusted to
7 answers
asked by
Tyger2020
2,971 views
Suppose that an object is dropped from a height of h meters and hits the ground with a velocity of v meters per second. Then v=
6 answers
asked by
Bryan
13,393 views
A baseball is thrown upwards from a height of 2 meters with an initial velocity of 10 meters per second. Use the fact that -9.8
4 answers
asked by
Emily
8,178 views
A mechanic wants to use a compound pulley to lift a go-kart from the ground to work table, a distance of 1.2 meters. Without the
4 answers
asked by
the real BARNY THE DINO :)
665 views
Blocks A and B of weight 200N and 100N respectively, rest on a 30 inclined plane and are attached to the post which is held
4 answers
asked by
Kishore
3,259 views
1. A spring bearing a 10-pound weight has stretched 0.5 inches. If you were to increase the weight to 15 pounds, how many inches
5 answers
asked by
John Gomez
4,443 views
The velocity function (in meters per second) is given for a particle moving along a line.
v(t) = 3t − 7, 0 ≤ t ≤ 3 (a) Find
4 answers
asked by
Anonymous
13,109 views
There is a 100g mass sitting on the 10cm mark, and a 50g mass sitting on the 60cm mark. Force 𝐹 acts at the 30cm mark.
6 answers
asked by
Physics Student
4,064 views
A box weighing 100 newtons is pushed up an inclined plane that is 5 meters long. It takes a force of 75 newtons to push it to
7 answers
asked by
chris
6,426 views
A thin uniform rod has a length of 0.550 m and is rotating in a circle on a frictionless table. The axis of rotation is
5 answers
asked by
Sarah
4,129 views
A toy rocket has a mass of 350g at launch.the force it produces is 15N and it is fired at angle of 65⁰ to the horizontal.what
7 answers
asked by
Tesnim
1,098 views
A car slows down from 108 km/h to 90 km/h over the course of 4 s and 0.1 km. The force of the brakes was 1000 N. What is the
5 answers
asked by
Markous
2,708 views
A car with a mass of 1500kg starts from rest and accelerates to a speed of 18m/s in 12s. Assume that the force of resistance
5 answers
asked by
Anonymous
4,574 views
An elastic string of length 20cm extends to 24cm. When it supports a weight of 50N, the energy stored in the string is
5 answers
asked by
ayo
2,610 views
a light string 4 meters long is wrapped around a solid cylindrical spool with a radius of 0.075 m and a mass of .5 kg.a 5kg mass
5 answers
asked by
mariel
6,975 views
A uniform meter rule is balanced at 30cm mark when a mass of 50g is hanging from its zero mark. calculate the weight of the
5 answers
asked by
sidney
1,858 views
A ball of mass 500g is kicked into the air at angle of 45degree. It reaches a height of 12m. What was it's initial velocity?
7 answers
asked by
Sam
3,329 views
A spiral spring extends from length 10.01m to 10.00cm when a force of 20N is applied on it. Calculate the constant force
14 answers
asked by
lola
4,624 views
Each of the four wheels of a car push on the road with a force of 4.0*10^3 N [down]. The driving force on the car is 8.0*10^3 N
4 answers
asked by
Maggie
1,725 views
Assume that all of the mass of a bicycle wheel is concentrated at its rim. Such a wheel of mass 1.2 kg and radius 30 cm starts
5 answers
asked by
kelsey
3,315 views
Ronald Johnson, who is 80.0 kg, is running at 4.00 m/s when he suddenly jumps onto a stationary playground merry-go-round at a
4 answers
asked by
J
902 views
A spiral spring of natural length of 20.0cm has a scale pan hanging freely on its lower end. When an object of mass 40g is
4 answers
asked by
Grace
2,238 views
STATE HOOKES LAW. WHAT IS THE FORCE REQUIRED TO PRODUCE AN EXTENSION OF 1CM. IF AN EXTENSION OF 8.0CM CAN BE PRODUCED BY A LOAD
3 answers
asked by
AMINAT
274 views
Given DIAGRAM 1.1 where FT means Tension and W means Weight, calculate the tension on the steel cable given the following
2 answers
asked anonymously
146 views
Your bumper car is travelling at 2 m/s. The total mass of you and your car is 350 kg. An empty motionless bumper car with a mass
4 answers
asked by
anonymous
2,859 views
1. Determine the effort required to lift a load of 100 N using:
(a) Using a single fixed pulley (b) A single movable pulley (c)
5 answers
asked by
Mustafa khamis shaaban
357 views
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