Recent content by triplel777

Homework Statement A block rests on a frictionless horizontal surface and is attached to a spring. When set into simple harmonic motion, the block oscillates back and forth with an angular frequency of 6.6 rad/s. The drawing indicates the position of the block when the spring is unstrained...

my teacher said to use this formula Wnc= delta KE+ delta PE would this make any difference?

huh... ok thanks

yup thanks so much :)

ok so 1/2*m*v^2/t =1/2*112*3.4^2/0.5 =1294.7 is that it?

so would it be p= {m(v/t)(vt/2)}/t p= 1294.7 watts is that right?

(a) Find the work done by the kinetic frictional force that acts on the skis. (b) What is the magnitude of the kinetic frictional force?

Homework Statement The cheetah is one of the fastest-accelerating animals, because it can go from rest to 3.4 m/s (about 8 mi/h) in 0.5 s. If its mass is 112 kg, determine the average power developed by the cheetah during the acceleration phase of its motion. Express your answer in watts and...

Homework Statement A 65-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. The initial speed of the skier is 6.4 m/s. After coasting 1.9 m up the slope, the skier has a speed of is 3.2 m/s. Homework Equations The Attempt at a Solution Work...

what is the net force acting on m1 in terms of T, g, and m1?

Homework Statement A 331-kg boat is sailing 14.6° north of east at a speed of 1.98 m/s. Thirty seconds later, it is sailing 37.5° north of east at a speed of 4.24 m/s. During this time, three forces act on the boat: a 28.8-N force directed 14.6° north of east (due to an auxiliary engine), a...

yes so Fa+Fb=14.4 how do i find the value of each one?

Homework Statement Two forces FA and FB are applied to an object whose mass is 16.0 kg. The larger force is FA. When both forces point due east, the object's acceleration has a magnitude of 0.900 m/s2. However, when FA points due east and FB points due west, the acceleration is 0.400 m/s2...

oh ok thanks its 104.4

how can i use x= 1/2 at^2 if i don't know the t or a? what do i use for t? i tried using v^2-V_0^2=2a(x-x_0) but that didnt work out?