A sled of 19kg is pushed by a force of 300N over a displacement of om in 10 sec.
A sled of 19kg is pushed by a force of 300N over a displacement of om in 10 sec. Assume that the angle between the horizontal and the applied force is 20 degrees Calculate the power of this action (in W)
1. A sled of mass m is pushed for 5 seconds at a constant force.
A sled of mass M (more) is also pushed for 5 seconds. THe force is
the same in each case. WHat is the momentum of each sled? How do
they compare? What is the energy of each sled? How do they
compare?
2. The same question, except that each sled is pushed for 5
meters instead of 5 seconds.
A 15.0 kg sled is pushed at 5 m/s up an icy slope that has an
incline angle of 10 degrees. If the coefficient of kinetic friction
is 0.050, how far up the slope will the sled travel before
stopping? (The answer is 5.73 m, but I need to see all the steps to
understand how to arrive at this answer.)
Suppose a sled passenger with total mass 51 kg is pushed 26 m
across the snow (μk = 0.20) at constant velocity by a force
directed 37° below the horizontal. (a) Calculate the work of the
applied force (in J).
(a)
Calculate the work of the applied force (in J).
(b)
Calculate the work of friction (in J).
(c)
Calculate the total work (in J).
I have the answers for this problem from a key, the answers are
3060, -3060,...
A
box of 5.1kg is pushed with a force of 43N up a slanted ramp at an
angle of 32. If the coefficient of kinetic friction is 0.24, what
is the boxes acceleration?
3. A block on an incline is pushed by a hand. The hand exerts a
force on the block parallel to the incline. State whether the
specified quantities are positive, negative, or zero. Explain in
each case.
a. The block moves up the incline and speeds up.The work done by
the hand on the block. The work done by the block on the hand.
b. The block moves down the incline and speeds up (even though
the hand is still...
A box is pushed across a rough horizontal floor by a
force acting parallel to the floor in the direction of motion. A
force doing negative on the box is------
gravity
friction
the applied force
normal force of the floor upward on the
body
Two blocks connected by a string are pushed across a
horizontalisurface by a force applied to one of the blocks as,
shown in the figure. The coefficient of kinetic friction between
the blocks and the surface is 0.20. If, F 20 N and M1.5 kg, what is
the tension in the connecting, string?
A glass pitcher containing water is pushed across a table with a
constant force, causing it to accelerate at 1 m/s2 . What will the
acceleration be if...
(a) the applied force is cut in half?
(b) water is removed, reducing the pitcher’s mass to half of its
original value?
(c) the force and the pitcher’s mass are both halved?
(d) the force is halved and the pitcher’s mass is doubled?
A 12.0-kg block is pushed across a rough horizontal surface by a
force that is angled 30.0◦ below the horizontal. The magnitude of
the force is 75.0 N and the acceleration of the block as it is
pushed is 3.20 m/s2 . What is the magnitude of the contact force
exerted on the block by the surface?