Vitorr classes

The elevator shown in figure (5-E5) is descending with an acceleration of 2 m/s². The mass of the block A is 0.5 kg. What force is exerted by the block A on the block B?  

A man has fallen into a ditch of width d and two of his friends are slowly pulling him out using a light rope and two fixed pulleys as shown in the figure. Show that the force (assumed equal for both friends) exerted by each friend on the road increases as the man moves up. Find the force when the man is at a depth h

ssc gd 2018 practice question questions

 Ncert Class 9 Maths Chapter 1 exercise 1.1 solution                                                                                                                                                             ...

ssc cgd 2018 most important question

A particle of mass 0.3 kg is subjected to a force F = - kx with k = 15 N/m. What will be the initial acceleration if it is released from a  point x = 20cm?

Raindrops of radius 1 mm and mass 4 mg are falling with a speed 30 m/s on the head of a bald person. The drops splash on the head of  the person and come to rest. Assuming equivalently that the drops cover a distance equal to their radii on the head, estimate the force exerted by each drop on the head

wo blocks of mass  ma and mb respectively are kept in contact on a frictionless table. The experimenter pushes the block a from behind so that the blocks accelerate . If the block A exerts a force F on the block B, what is the force exerted by the experimenter on block A ?

A particle of mass 50 g moves on a straight line. The variation of  speed with time is shown in figure. Find the force acting on the  particle at t =2, 4 and 6 seconds

Two blocks of equal mass m are tied to each other through a light string. One of the blocks is pulled along the line joining them with a constant force F. Find the tension in the string joining the two blocks.

A block of mass 0.2 kg is suspended from the ceiling by a light string.A second block of mass 0.3 kg is suspended from the first block through another string. Find the tensions in the two strings.

In a TV picture tube electrons are ejected from the cathode with negligible speed and reach a velocity of 〖5∗10〗^6m/s in travelling  1cm. Assuming straight line motion, find the constant force exerted on the electron. The mass of electron is 〖9.1∗10〗^(−31)Kg.

A car moving at 40 km/h is to be stopped by applying brakes in the next 4.0 m. If the car weighs 2000 kg, what average force must be applied on it?

A block of mass 2 kg placed on a long frictionless horizontal table is  pulled horizontally by a constant force F. It is found to move 10 m in first two seconds. Find the magnitude of F.

Watch the video for full solution: Subscribe to our channel :   vitorr classes 1) 72, 193, 362, 587, 876, ? a)991 b) 981 c) 1237 d) 1273 2) बैटरी में भरा होता है लगभग a) 40% सुल्फुरिक अल्म व 60% जल b) 50% सुल्फुरिक अल्म व 50% जल c) 60% सुल्फुरिक अल्म व 40% जल d) 70% सुल्फुरिक अल्म व 50% जल 3) २३ दिसम्बर, 2017 को पारम्भ ‘ग्राम  गंगा परियोजना’ निमन में से किस योजना का एक भाग है ? a) निर्मल गंगा b) नमामि गंगा c) सवच्छ भारत मिशन d) उपरोक्त में से कोई नही 4) )  एक माईक्रोन किसके बराबर होता है? a) 100 मिमी b) 0.01 मिमी c) 1000 मिमी d) 0.001 मिमी 5) किसी निकाय द्वारा कार्य करने की देर कहलाती है a) उर्जा b) बल c) शक्ति d) संवेग 6) ‘शादी शगुन योजना’ किस मंत्रालय द्वारा संचालित किया जा रहा है? a) संस्कृति b) गृह c) अल्प्संखयक d) खेल 7) )  एक बस पुरुषो तथा उनकी आधी संख्या के बराबर महिलाओ को लेकर देल्ही से चलती है | मेरठ पहुचने पर दस पुरुष उत्तर जाते है| अब बस में पुरुषो तथा महिलाओ की संख्या बराबर है| परारम्भ मे...