Recent content by drabdallh

serway problem 7,20

IF F=MGcos θ AND THE ANGLE BETWEEN F AND D IS θ THEN WILL THE WORK BE MGcos2θ?

you don't get what i mean imagine the surface of the water it will be perpendicular to net force of gravity and fictitious force while the normal force is the actual acting force

if water in a container in a car and the car accelerates why the surface of the water is perpendicular to the net force of gravity and fictitious force not to the net of normal and gravitational force?

yes it is like serway problem page 161 n.b the pic in serway shows that there would only be a horizontal movement but mathematically impossible as the the tangent of the triangle should be the same length of the rope and this wouldn't be possible if it stays on the same horizontal level

for more specificity it will not rotate i.e completely but it will get higher in a circular patter. and to make the question more simpler this motion to occur need 2 things the object to be moving and a centripetal fore my whole problem that the motion is not true it is relative on tothe car...

all what you said is correct still no answer to my question the mass will move forward yes but in the same time will rotate anti clockwise what caused this rotation?

yes the car will impart some its acceleration to the mass but the acceleration of th car is forward while the upside rotation of the mass is backward so the rotaion can't be due to car acceleration

if a mass is hangig from ceiling of a car the car starts to accelerate forward with acceleration greater than g the mass will rotate and then starts to accelerate forward wheil its in the same position making an angle with the vertical my question what caused the rotation? i know there is...