Recent content by hannam

here s the pic of question

Homework Statement A cubical block of wood, 10 cm on a side, is placed in a glass cup whose higher end is open to the atmosphere. The wood is in equilibrium at the interface between water and oil with wood’s lower surface 2 cm below the interface. The density of oil is 790 kg/m3. a) What is the...

can anyone help ? :(

and i have no idea what to do in part b :)

Homework Statement Object A (1 kg) and B (3 kg) are forced together, initially compressing a spring S between them by 6 cm; then the system is released from rest. The spring with k=1250 N/m is not fastened to either block and drops to the surface after it has expanded to its...

ok i tried that one too but i still have quadratic. how can i find t?

i couldn't decide whether or not to include drag force on the arrow.because, in the question it says "Drag Force= 2.2 m where m is the mass of object" there is no information about the arrow

Homework Statement a ball makes a free-fall with zero initial velocity and an arrow with 25 m/s initial velocity is thrown to shoot this ball at the same time. The ball is initially h=38 m higher than the arrow. a) Assume no drag force then how long after does this collision occur? At...

i didnt see the straight lines and of course its half circle so it should be πr :) yess i found it thank you so much :smile:

Homework Statement In Formula 1 race, the cars approach curves from the outside, cut through to the inside, and then drift again to the outside (red path AA’ in the figure). However, the blue path (BB’) in the figure is shorter. Then why do not the drivers follow the shortest path? Give...