physics
if the second derivative is not uniform, then is the third derivative also not uniform? thank you!
Physics
A scaffold of mass 50kg and length 5m is supported in a horizontal position by a vertical cable at each end. A window cleaner of mass 70kg stands at a point 2m from one end. Determine the tension in the nearer cable and also the farther cable.
physics
A new type of spring is found where the spring force F is given by F=-kx + bx^2 where k=400 N/ m and b=100 N/m^2 and x is the expansion (or compression) of the spring from its equilibrium position. The spring is attached to a point mass of 1 kg sitting on a horizontal friction...
Physics
A brick of mass 1.0 kg slides down an icy roof inclined at 30.0 degrees with respect to the horizontal. (a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 2.00 m away? Ignore friction. (b) Redo part (a) if the coefficient of kinetic f...
physics
Pulling up on a rope, you lift a 4.05-{\rm kg} bucket of water from a well with an acceleration of 2.20 m/s^2. What is the tension in the rope?
physics
the maximum height a typical person can jump from a crouched start is about 60cm. By how much does the gravitational potential energy increase for a 72kg person in such a jump? Where does this energy come from? I know the formula for gravitational potential energy is U=mgh. I ...
11th grade
which ons is stronger 1)A solid cylinder of 2)A hollow cylinser of iron 3) A cylinder made up of slits of iron
Kristen
Thank you for your help!
Kristen
A flywheel has a moment of inertia of 2.6 kg·m2. What is the average power needed to spin it up from rest to an angular velocity of 100 rad/s in 30 seconds?
carrol high school
A car brakes from 60 mph to a full stop in 4 seconds. Find the accelerayion of the car during this interval
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